Single-layer shingle



FIG. 1 is a top plan view of a single-layer shingle showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof; and,

FIG. 5 is a perspective view thereof. 

CLAIM The ornamental design for a single-layer shingle, as shown and described. 